20758881

素因数分解:

$3^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 33784128

約数和(自身を除く): 13025247

約数列:

[1, 3, 11, 13, 33, 39, 53, 83, 121, 143, 159, 249, 363, 429, 583, 689, 913, 1079, 1573, 1749, 2067, 2739, 3237, 4399, 4719, 6413, 7579, 10043, 11869, 13197, 19239, 22737, 30129, 35607, 48389, 57187, 83369, 130559, 145167, 171561, 250107, 391677, 532279, 629057, 1596837, 1887171, 6919627, 20758881]

約数ペア:

[(1, 20758881), (3, 6919627), (11, 1887171), (13, 1596837), (33, 629057), (39, 532279), (53, 391677), (83, 250107), (121, 171561), (143, 145167), (159, 130559), (249, 83369), (363, 57187), (429, 48389), (583, 35607), (689, 30129), (913, 22737), (1079, 19239), (1573, 13197), (1749, 11869), (2067, 10043), (2739, 7579), (3237, 6413), (4399, 4719)]